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Laplandite-(Ce)

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Formula:
Na4CeTiPO4Si7O18 · 5H2O
Colour:
gray-white, pale yellow, ...
Hardness:
2 - 3
This page provides mineralogical data about Laplandite-(Ce).

Classification of Laplandite-(Ce)

Approved
9.DJ.10

9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
78.7.9.1

78 : Unclassified Silicates
7 :
17.6.10

17 : Silicates Containing other Anions
6 : Silicates with phosphate
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Type Occurrence of Laplandite-(Ce)

Physical Properties of Laplandite-(Ce)

Colour:
gray-white, pale yellow, pale blue
Hardness (Mohs):
2 - 3

Crystallography of Laplandite-(Ce)

Morphology:
Radial-fibrous aggregates.

Optical Data of Laplandite-(Ce)

Type:
Biaxial (-)
RI values:
nα = 1.568 nβ = 1.584 nγ = 1.585
2V:
Measured: 28° , Calculated: 26°
Max Birefringence:
δ = 0.017
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong

Chemical Properties of Laplandite-(Ce)

Formula:
Na4CeTiPO4Si7O18 · 5H2O
Essential elements:
All elements listed in formula:

Relationship of Laplandite-(Ce) to other Species

9.DJ.05NarsarsukiteNa4(Ti,Fe)2[Si8O20](O,OH,F)2
9.DJ.15Caysichite-(Y)Ca2Y2Si4O10(CO3)3 · 4H2O
9.DJ.20Seidite-(Ce)Na4(Ce,Sr)2Ti[(O,OH,F)5|Si8O18(OH)] · 5H2O
9.DJ.25Carlosturanite(Mg,Fe,Ti)21(Si,Al)12O28(OH)34•H2O
9.DJ.30JonesiteBa4(K,Na)2Ti4Al2(Si3O9)2(SiO4)4O2 · 6H2O
17.6.1NagelschmidtiteCa7(SiO4)2(PO4)2
17.6.2PerhamiteCa3Al7.7Si3P4O23.5(OH)14.1 · 8H2O
17.6.3Viséite
17.6.4Phosinaite
17.6.5ClinophosinaiteNa12(Ca,Sr)4(Si4O12)(PO4)4
17.6.6Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O
17.6.7LomonosoviteNa5Ti2(Si2O7)(PO4)O2
17.6.8BornemaniteNa6BaTi2Nb(Si2O7)2(PO4)O2(OH)F
17.6.9SoboleviteNa13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3
17.6.11 VunonnemiteNa5TiNb3Si6O25F2 · 2Na3PO4
17.6.12Saryarkite-(Y)Ca(Y,Th)Al5(SiO4)2(PO4,SO4)2(OH)7 · 6H2O
17.6.13Steenstrupine-(Ce)Na14Mn22+(Fe3+,Mn3+)2Ce6(Zr,Th)(Si6O18)2(PO4)6(HPO4)(OH)2 · 2H2O
17.6.14WaylanditeBiAl3(PO4)2(OH)6
17.6.15Britholite-(Ce)Ca2(Ce,Ca)3(SiO4,PO4)3(OH,F)
17.6.16Britholite-(Y)Ca2(Y,Ca)3(SiO4,PO4)3(OH,F)
17.6.17EylettersiteTh0.75Al3(PO4)2(OH)6

Other Names for Laplandite-(Ce)

Name in Other Languages:
Simplified Chinese:硅钛铈钠石

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Laplandite-(Ce)

Reference List:
American Mineralogist (1975): 60: 487.

Internet Links for Laplandite-(Ce)

Localities for Laplandite-(Ce)

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
China
 
  • Inner Mongolia Autonomous Region
    • Hohhot League (Huhehaote Prefecture)
      • Wuchuan Co.
Fengjun Nie, Fengxiang Wang, Yu'an Zhao, Yan Sun, and Hua Chai (2013): Mineral Deposits 32(4), 730-743
Russia (TL)
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Lovozero Massif
          • Karnasurt Mt
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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